質問編集履歴
5
真剣勝負
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＝一つ分の面の座標かなと。
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-
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下記のjavaの正二十面体のプログラムをF#にコンバートすることはできませんか？誰かよろしくお願いします。
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```
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import java.applet.*;
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一方的な変更
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(各頂点数×一点に集約される面数÷正N面体の面数分)
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＝一つ分の面の座標かなと。
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```javaの正二十面体のプログラムをF#にコンバートすることはできませんか？誰かよろしくお願いします。
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import java.applet.*;
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import java.awt.*;
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import com.sun.j3d.utils.picking.behaviors.PickRotateBehavior;
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import com.sun.j3d.utils.universe.*;
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import javax.media.j3d.*;
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import javax.vecmath.*;
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public class Icosahedron2 extends Applet{
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private static final long serialVersionUID = 1L;
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private SimpleUniverse u = null;
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public void init(){
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int i;
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//<set layout of applet, construct canvas3d, add canvas3d>
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setLayout(new BorderLayout());
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GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
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Canvas3D canvas3d = new Canvas3D(config);
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add(canvas3d, BorderLayout.CENTER);
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//create scene graph
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BranchGroup root = new BranchGroup();
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Transform3D tr = new Transform3D();
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tr.setScale(0.48);
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TransformGroup tg = new TransformGroup(tr);
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root.addChild(tg);
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//appearance for polygon
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Appearance ap = new Appearance();
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Material mt = new Material();
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mt.setLightingEnable(true);
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ap.setMaterial(mt);
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PolygonAttributes pa = new PolygonAttributes();
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pa.setBackFaceNormalFlip(true);
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pa.setCullFace(PolygonAttributes.CULL_NONE);
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ap.setPolygonAttributes(pa);
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//coordinates of vertices
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Point3f[] vertices = new Point3f[12];
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float x = (float) ((1+Math.sqrt(5))/2);
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vertices[0] = new Point3f( 1, x, 0);
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vertices[1] = new Point3f(-1, x, 0);
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vertices[2] = new Point3f(-1, -x, 0);
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vertices[3] = new Point3f( 1, -x, 0);
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vertices[4] = new Point3f( 0, 1, x);
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vertices[5] = new Point3f( 0, -1, x);
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vertices[6] = new Point3f( 0, -1, -x);
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vertices[7] = new Point3f( 0, 1, -x);
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vertices[8] = new Point3f( x, 0, 1);
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vertices[9] = new Point3f( x, 0, -1);
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vertices[10] = new Point3f(-x, 0, -1);
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vertices[11] = new Point3f(-x, 0, 1);
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//polygon of 3 rectangles
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QuadArray geometry = new QuadArray(12, QuadArray.COORDINATES | QuadArray.NORMALS | QuadArray.COLOR_3);
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geometry.setCoordinates(0, vertices);
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for(i=0; i<4; i++) geometry.setNormal(i, new Vector3f(0, 0, 1));
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for(i=4; i<8; i++) geometry.setNormal(i, new Vector3f(1, 0, 0));
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for(i=8; i<12; i++) geometry.setNormal(i, new Vector3f(0, 1, 0));
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for(i=0; i<4; i++) geometry.setColor(i, new Color3f(Color.RED));
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for(i=4; i<8; i++) geometry.setColor(i, new Color3f(Color.GREEN));
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for(i=8; i<12; i++) geometry.setColor(i, new Color3f(Color.BLUE));
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Shape3D s3d = new Shape3D(geometry);
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s3d.setAppearance(ap);
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tg.addChild(s3d);
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//wire frame
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for(i=0; i<12; i++){
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for(int j=i; j<12; j++){
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if (vertices[i].distance(vertices[j]) < 2.1f){
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LineArray ends = new LineArray(2, GeometryArray.COORDINATES);
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Point3f vertex[] = new Point3f[2];
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vertex[0] = vertices[i];
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vertex[1] = vertices[j];
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ends.setCoordinates(0, vertex);
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Shape3D line = new Shape3D(ends);
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tg.addChild(line);
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}
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}
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}
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278
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+
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279
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+
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+
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281
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+
//lighting
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282
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+
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283
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+
BoundingSphere bounds =
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285
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new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
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286
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+
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287
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+
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288
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+
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289
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+
Color3f color = new Color3f(1.0f, 1.0f, 1.0f); // white light
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290
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+
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Vector3f direction = new Vector3f(4.0f,5.0f,-10.0f);
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292
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+
|
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293
|
+
DirectionalLight light = new DirectionalLight(color,direction);
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+
|
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295
|
+
light.setInfluencingBounds(bounds);
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296
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|
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297
|
+
root.addChild(light);
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298
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299
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+
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300
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+
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301
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//picking
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+
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303
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+
BoundingSphere bounds2 =
|
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|
+
|
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305
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+
new BoundingSphere(new Point3d(0.0,0.0,0.0), 0.1);
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306
|
+
|
|
307
|
+
PickRotateBehavior prb = new PickRotateBehavior(root,canvas3d,bounds2); //left button
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|
308
|
+
|
|
309
|
+
root.addChild(prb);
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310
|
+
|
|
311
|
+
tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
|
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312
|
+
|
|
313
|
+
tg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
|
|
314
|
+
|
|
315
|
+
tg.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
|
|
316
|
+
|
|
317
|
+
|
|
318
|
+
|
|
319
|
+
u = new SimpleUniverse(canvas3d);
|
|
320
|
+
|
|
321
|
+
u.getViewingPlatform().setNominalViewingTransform();
|
|
322
|
+
|
|
323
|
+
u.addBranchGraph(root);
|
|
324
|
+
|
|
325
|
+
}
|
|
326
|
+
|
|
327
|
+
}
|
|
328
|
+
|
|
329
|
+
```
|
3
紆余曲折ありまして
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test
CHANGED
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@@ -9,3 +9,103 @@
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9
9
|
このように表示され、正二十面体にならないので非常に困っています。
|
|
10
10
|
|
|
11
11
|
正二十面体はどのようにして記述できるかというコード詳細をご教授願えないでしょうか？
|
|
12
|
+
|
|
13
|
+
|
|
14
|
+
|
|
15
|
+
```F#+OpenTK
|
|
16
|
+
|
|
17
|
+
type GLEx =
|
|
18
|
+
|
|
19
|
+
/// Add multiple vertices to GL
|
|
20
|
+
|
|
21
|
+
static member Vertices vertices =
|
|
22
|
+
|
|
23
|
+
for (x:float32), y, z in vertices do
|
|
24
|
+
|
|
25
|
+
GL.Vertex3(x, y, z)
|
|
26
|
+
|
|
27
|
+
|
|
28
|
+
|
|
29
|
+
/// Add mesh to the GL and set the specified normal vector first
|
|
30
|
+
|
|
31
|
+
static member Face (x:float32, y, z) vertices =
|
|
32
|
+
|
|
33
|
+
GL.Normal3(x, y, z)
|
|
34
|
+
|
|
35
|
+
GLEx.Vertices vertices
|
|
36
|
+
|
|
37
|
+
```
|
|
38
|
+
|
|
39
|
+
|
|
40
|
+
|
|
41
|
+
```F#+OpenTK
|
|
42
|
+
|
|
43
|
+
let cube = DF (fun ctx ->
|
|
44
|
+
|
|
45
|
+
GL.Material(MaterialFace.FrontAndBack, MaterialParameter.Diffuse, ctx.Color)
|
|
46
|
+
|
|
47
|
+
GL.Begin(BeginMode.Quads)
|
|
48
|
+
|
|
49
|
+
GLEx.Face
|
|
50
|
+
|
|
51
|
+
(-1.f, 0.f, 0.f)
|
|
52
|
+
|
|
53
|
+
[ (-0.5f, -0.5f, -0.5f); (-0.5f, -0.5f, 0.5f);
|
|
54
|
+
|
|
55
|
+
(-0.5f, 0.5f, 0.5f); (-0.5f, 0.5f, -0.5f) ]
|
|
56
|
+
|
|
57
|
+
GLEx.Face
|
|
58
|
+
|
|
59
|
+
( 1.f, 0.f, 0.f)
|
|
60
|
+
|
|
61
|
+
[ ( 0.5f, -0.5f, -0.5f); ( 0.5f, -0.5f, 0.5f);
|
|
62
|
+
|
|
63
|
+
( 0.5f, 0.5f, 0.5f); ( 0.5f, 0.5f, -0.5f) ]
|
|
64
|
+
|
|
65
|
+
GLEx.Face
|
|
66
|
+
|
|
67
|
+
(0.f, -1.f, 0.f)
|
|
68
|
+
|
|
69
|
+
[ (-0.5f, -0.5f, -0.5f); (-0.5f, -0.5f, 0.5f);
|
|
70
|
+
|
|
71
|
+
( 0.5f, -0.5f, 0.5f); ( 0.5f, -0.5f, -0.5f) ]
|
|
72
|
+
|
|
73
|
+
GLEx.Face
|
|
74
|
+
|
|
75
|
+
(0.f, 1.f, 0.f)
|
|
76
|
+
|
|
77
|
+
[ (-0.5f, 0.5f, -0.5f); (-0.5f, 0.5f, 0.5f);
|
|
78
|
+
|
|
79
|
+
( 0.5f, 0.5f, 0.5f); ( 0.5f, 0.5f, -0.5f) ]
|
|
80
|
+
|
|
81
|
+
GLEx.Face
|
|
82
|
+
|
|
83
|
+
(0.f, 0.f, -1.f)
|
|
84
|
+
|
|
85
|
+
[ (-0.5f, -0.5f, -0.5f); (-0.5f, 0.5f, -0.5f);
|
|
86
|
+
|
|
87
|
+
( 0.5f, 0.5f, -0.5f); ( 0.5f, -0.5f, -0.5f) ]
|
|
88
|
+
|
|
89
|
+
GLEx.Face
|
|
90
|
+
|
|
91
|
+
(0.f, 0.f, 1.f)
|
|
92
|
+
|
|
93
|
+
[ (-0.5f, -0.5f, 0.5f); (-0.5f, 0.5f, 0.5f);
|
|
94
|
+
|
|
95
|
+
( 0.5f, 0.5f, 0.5f); ( 0.5f, -0.5f, 0.5f) ]
|
|
96
|
+
|
|
97
|
+
GL.End() )
|
|
98
|
+
|
|
99
|
+
```
|
|
100
|
+
|
|
101
|
+
となるわけで正六面体(=立方体)２４箇所座標があるということは
|
|
102
|
+
|
|
103
|
+
正二十面体では１２箇所では足りないのではと思いまして
|
|
104
|
+
|
|
105
|
+
とりあえず
|
|
106
|
+
|
|
107
|
+
必要なことは
|
|
108
|
+
|
|
109
|
+
(各頂点数×一点に集約される面数÷正N面体の面数分)
|
|
110
|
+
|
|
111
|
+
＝一つ分の面の座標かなと。
|
2
わかりやすくするため
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -1,10 +1,10 @@
|
|
|
1
1
|
F#とOpenTKを用いて正二十面体を描画したいのですが、どのようなコードを記述すればいいのかわからなくなりました。
|
|
2
2
|
|
|
3
|
-
|
|
4
4
|
|
|
5
5
|
こちらのコードを実行すると
|
|
6
6
|
|
|
7
|
-
|
|
8
8
|
|
|
9
9
|
このように表示され、正二十面体にならないので非常に困っています。
|
|
10
10
|
|
1
test
CHANGED
|
File without changes
|
test
CHANGED
|
File without changes
|